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Debian Security Bug TrackerDEBIANCVE:CVE-2024-46794HistorySep 18, 2024 - 8:15 a.m.
CVE-2024-46794
2024-09-1808:15:06
Debian Security Bug Tracker
security-tracker.debian.org
x86
tdx
data leak
mmio_read
fix
unix
In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix data leak in mmio_read() The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM. Sean noticed that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the VMM. This variable is only needed as an output value. It did not need to be passed to the VMM in the first place. Do not send the original value of *val to the VMM. [ dhansen: clarify what ‘val’ is used for. ]
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | linux | <= 6.1.106-3 | linux_6.1.106-3_all.deb |
| Debian | 11 | all | linux | < 5.10.223-1 | linux_5.10.223-1_all.deb |
| Debian | 999 | all | linux | <= 6.10.9-1 | linux_6.10.9-1_all.deb |
| Debian | 13 | all | linux | <= 6.10.9-1 | linux_6.10.9-1_all.deb |
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